Merge "Set DEXOPT_DISABLE_HIDDEN_API_CHECKS for system apps"
diff --git a/Android.bp b/Android.bp
index 4d78112..6712461 100644
--- a/Android.bp
+++ b/Android.bp
@@ -473,6 +473,8 @@
         "telephony/java/android/telephony/mbms/IStreamingServiceCallback.aidl",
         "telephony/java/android/telephony/mbms/vendor/IMbmsDownloadService.aidl",
         "telephony/java/android/telephony/mbms/vendor/IMbmsStreamingService.aidl",
+        "telephony/java/android/telephony/INetworkService.aidl",
+        "telephony/java/android/telephony/INetworkServiceCallback.aidl",
         "telephony/java/com/android/ims/internal/IImsCallSession.aidl",
         "telephony/java/com/android/ims/internal/IImsCallSessionListener.aidl",
         "telephony/java/com/android/ims/internal/IImsConfig.aidl",
diff --git a/api/current.txt b/api/current.txt
index a1e60e5..7954bf5 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -39890,6 +39890,7 @@
     field public static final int EUTRAN = 3; // 0x3
     field public static final int GERAN = 1; // 0x1
     field public static final int IWLAN = 5; // 0x5
+    field public static final int UNKNOWN = 0; // 0x0
     field public static final int UTRAN = 2; // 0x2
   }
 
diff --git a/api/system-current.txt b/api/system-current.txt
index e0f8ecf..1dd7c6d 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -3967,6 +3967,63 @@
     field public static final java.lang.String MBMS_STREAMING_SERVICE_ACTION = "android.telephony.action.EmbmsStreaming";
   }
 
+  public class NetworkRegistrationState implements android.os.Parcelable {
+    ctor public NetworkRegistrationState(int, int, int, int, int, boolean, int[], android.telephony.CellIdentity);
+    ctor protected NetworkRegistrationState(android.os.Parcel);
+    method public int describeContents();
+    method public int getAccessNetworkTechnology();
+    method public int[] getAvailableServices();
+    method public int getDomain();
+    method public int getRegState();
+    method public int getTransportType();
+    method public boolean isEmergencyEnabled();
+    method public void writeToParcel(android.os.Parcel, int);
+    field public static final android.os.Parcelable.Creator<android.telephony.NetworkRegistrationState> CREATOR;
+    field public static final int DOMAIN_CS = 1; // 0x1
+    field public static final int DOMAIN_PS = 2; // 0x2
+    field public static final int REG_STATE_DENIED = 3; // 0x3
+    field public static final int REG_STATE_HOME = 1; // 0x1
+    field public static final int REG_STATE_NOT_REG_NOT_SEARCHING = 0; // 0x0
+    field public static final int REG_STATE_NOT_REG_SEARCHING = 2; // 0x2
+    field public static final int REG_STATE_ROAMING = 5; // 0x5
+    field public static final int REG_STATE_UNKNOWN = 4; // 0x4
+    field public static final int SERVICE_TYPE_DATA = 2; // 0x2
+    field public static final int SERVICE_TYPE_EMERGENCY = 5; // 0x5
+    field public static final int SERVICE_TYPE_SMS = 3; // 0x3
+    field public static final int SERVICE_TYPE_VIDEO = 4; // 0x4
+    field public static final int SERVICE_TYPE_VOICE = 1; // 0x1
+  }
+
+  public abstract class NetworkService extends android.app.Service {
+    method protected abstract android.telephony.NetworkService.NetworkServiceProvider createNetworkServiceProvider(int);
+    field public static final java.lang.String NETWORK_SERVICE_EXTRA_SLOT_ID = "android.telephony.extra.SLOT_ID";
+    field public static final java.lang.String NETWORK_SERVICE_INTERFACE = "android.telephony.NetworkService";
+  }
+
+  public class NetworkService.NetworkServiceProvider {
+    ctor public NetworkService.NetworkServiceProvider(int);
+    method public void getNetworkRegistrationState(int, android.telephony.NetworkServiceCallback);
+    method public final int getSlotId();
+    method public final void notifyNetworkRegistrationStateChanged();
+    method protected void onDestroy();
+  }
+
+  public class NetworkServiceCallback {
+    method public void onGetNetworkRegistrationStateComplete(int, android.telephony.NetworkRegistrationState);
+    field public static final int RESULT_ERROR_BUSY = 3; // 0x3
+    field public static final int RESULT_ERROR_FAILED = 5; // 0x5
+    field public static final int RESULT_ERROR_ILLEGAL_STATE = 4; // 0x4
+    field public static final int RESULT_ERROR_INVALID_ARG = 2; // 0x2
+    field public static final int RESULT_ERROR_UNSUPPORTED = 1; // 0x1
+    field public static final int RESULT_SUCCESS = 0; // 0x0
+  }
+
+  public class ServiceState implements android.os.Parcelable {
+    method public java.util.List<android.telephony.NetworkRegistrationState> getNetworkRegistrationStates();
+    method public java.util.List<android.telephony.NetworkRegistrationState> getNetworkRegistrationStates(int);
+    method public android.telephony.NetworkRegistrationState getNetworkRegistrationStates(int, int);
+  }
+
   public final class SmsManager {
     method public void sendMultipartTextMessageWithoutPersisting(java.lang.String, java.lang.String, java.util.List<java.lang.String>, java.util.List<android.app.PendingIntent>, java.util.List<android.app.PendingIntent>);
     method public void sendTextMessageWithoutPersisting(java.lang.String, java.lang.String, java.lang.String, android.app.PendingIntent, android.app.PendingIntent);
diff --git a/services/core/java/com/android/server/IpSecService.java b/services/core/java/com/android/server/IpSecService.java
index c2adbfa..fe4ac6d7 100644
--- a/services/core/java/com/android/server/IpSecService.java
+++ b/services/core/java/com/android/server/IpSecService.java
@@ -65,7 +65,6 @@
 import java.net.InetSocketAddress;
 import java.net.UnknownHostException;
 import java.util.ArrayList;
-import java.util.BitSet;
 import java.util.List;
 
 import libcore.io.IoUtils;
@@ -596,6 +595,10 @@
             return mSpi;
         }
 
+        public EncapSocketRecord getSocketRecord() {
+            return mSocket;
+        }
+
         /** always guarded by IpSecService#this */
         @Override
         public void freeUnderlyingResources() {
@@ -806,9 +809,29 @@
         /** always guarded by IpSecService#this */
         @Override
         public void freeUnderlyingResources() {
-            // TODO: Add calls to netd
+            // Calls to netd
             //       Teardown VTI
             //       Delete global policies
+            try {
+                mSrvConfig.getNetdInstance().removeVirtualTunnelInterface(mInterfaceName);
+
+                for (int direction : DIRECTIONS) {
+                    int mark = (direction == IpSecManager.DIRECTION_IN) ? mIkey : mOkey;
+                    mSrvConfig
+                            .getNetdInstance()
+                            .ipSecDeleteSecurityPolicy(
+                                    0, direction, mLocalAddress, mRemoteAddress, mark, 0xffffffff);
+                }
+            } catch (ServiceSpecificException e) {
+                // FIXME: get the error code and throw is at an IOException from Errno Exception
+            } catch (RemoteException e) {
+                Log.e(
+                        TAG,
+                        "Failed to delete VTI with interface name: "
+                                + mInterfaceName
+                                + " and id: "
+                                + mResourceId);
+            }
 
             getResourceTracker().give();
             releaseNetId(mIkey);
@@ -1229,24 +1252,57 @@
         final int okey = reserveNetId();
         String intfName = String.format("%s%d", TUNNEL_INTERFACE_PREFIX, resourceId);
 
-        // TODO: Add calls to netd:
-        //       Create VTI
-        //       Add inbound/outbound global policies
-        //              (use reqid = 0)
+        try {
+            // Calls to netd:
+            //       Create VTI
+            //       Add inbound/outbound global policies
+            //              (use reqid = 0)
+            mSrvConfig
+                    .getNetdInstance()
+                    .addVirtualTunnelInterface(intfName, localAddr, remoteAddr, ikey, okey);
 
-        userRecord.mTunnelInterfaceRecords.put(
-                resourceId,
-                new RefcountedResource<TunnelInterfaceRecord>(
-                        new TunnelInterfaceRecord(
-                                resourceId,
-                                intfName,
-                                underlyingNetwork,
-                                localAddr,
-                                remoteAddr,
-                                ikey,
-                                okey),
-                        binder));
-        return new IpSecTunnelInterfaceResponse(IpSecManager.Status.OK, resourceId, intfName);
+            for (int direction : DIRECTIONS) {
+                int mark = (direction == IpSecManager.DIRECTION_OUT) ? okey : ikey;
+
+                mSrvConfig
+                        .getNetdInstance()
+                        .ipSecAddSecurityPolicy(
+                                0, // Use 0 for reqId
+                                direction,
+                                "",
+                                "",
+                                0,
+                                mark,
+                                0xffffffff);
+            }
+
+            userRecord.mTunnelInterfaceRecords.put(
+                    resourceId,
+                    new RefcountedResource<TunnelInterfaceRecord>(
+                            new TunnelInterfaceRecord(
+                                    resourceId,
+                                    intfName,
+                                    underlyingNetwork,
+                                    localAddr,
+                                    remoteAddr,
+                                    ikey,
+                                    okey),
+                            binder));
+            return new IpSecTunnelInterfaceResponse(IpSecManager.Status.OK, resourceId, intfName);
+        } catch (RemoteException e) {
+            // Release keys if we got an error.
+            releaseNetId(ikey);
+            releaseNetId(okey);
+            throw e.rethrowFromSystemServer();
+        } catch (ServiceSpecificException e) {
+            // FIXME: get the error code and throw is at an IOException from Errno Exception
+        }
+
+        // If we make it to here, then something has gone wrong and we couldn't create a VTI.
+        // Release the keys that we reserved, and return an error status.
+        releaseNetId(ikey);
+        releaseNetId(okey);
+        return new IpSecTunnelInterfaceResponse(IpSecManager.Status.RESOURCE_UNAVAILABLE);
     }
 
     /**
@@ -1381,12 +1437,50 @@
         }
     }
 
+    private void createOrUpdateTransform(
+            IpSecConfig c, int resourceId, SpiRecord spiRecord, EncapSocketRecord socketRecord)
+            throws RemoteException {
+
+        int encapType = c.getEncapType(), encapLocalPort = 0, encapRemotePort = 0;
+        if (encapType != IpSecTransform.ENCAP_NONE) {
+            encapLocalPort = socketRecord.getPort();
+            encapRemotePort = c.getEncapRemotePort();
+        }
+
+        IpSecAlgorithm auth = c.getAuthentication();
+        IpSecAlgorithm crypt = c.getEncryption();
+        IpSecAlgorithm authCrypt = c.getAuthenticatedEncryption();
+
+        mSrvConfig
+                .getNetdInstance()
+                .ipSecAddSecurityAssociation(
+                        resourceId,
+                        c.getMode(),
+                        c.getSourceAddress(),
+                        c.getDestinationAddress(),
+                        (c.getNetwork() != null) ? c.getNetwork().netId : 0,
+                        spiRecord.getSpi(),
+                        c.getMarkValue(),
+                        c.getMarkMask(),
+                        (auth != null) ? auth.getName() : "",
+                        (auth != null) ? auth.getKey() : new byte[] {},
+                        (auth != null) ? auth.getTruncationLengthBits() : 0,
+                        (crypt != null) ? crypt.getName() : "",
+                        (crypt != null) ? crypt.getKey() : new byte[] {},
+                        (crypt != null) ? crypt.getTruncationLengthBits() : 0,
+                        (authCrypt != null) ? authCrypt.getName() : "",
+                        (authCrypt != null) ? authCrypt.getKey() : new byte[] {},
+                        (authCrypt != null) ? authCrypt.getTruncationLengthBits() : 0,
+                        encapType,
+                        encapLocalPort,
+                        encapRemotePort);
+    }
+
     /**
-     * Create a transport mode transform, which represent two security associations (one in each
-     * direction) in the kernel. The transform will be cached by the system server and must be freed
-     * when no longer needed. It is possible to free one, deleting the SA from underneath sockets
-     * that are using it, which will result in all of those sockets becoming unable to send or
-     * receive data.
+     * Create a IPsec transform, which represents a single security association in the kernel. The
+     * transform will be cached by the system server and must be freed when no longer needed. It is
+     * possible to free one, deleting the SA from underneath sockets that are using it, which will
+     * result in all of those sockets becoming unable to send or receive data.
      */
     @Override
     public synchronized IpSecTransformResponse createTransform(IpSecConfig c, IBinder binder)
@@ -1402,58 +1496,28 @@
             return new IpSecTransformResponse(IpSecManager.Status.RESOURCE_UNAVAILABLE);
         }
 
-        int encapType, encapLocalPort = 0, encapRemotePort = 0;
         EncapSocketRecord socketRecord = null;
-        encapType = c.getEncapType();
-        if (encapType != IpSecTransform.ENCAP_NONE) {
+        if (c.getEncapType() != IpSecTransform.ENCAP_NONE) {
             RefcountedResource<EncapSocketRecord> refcountedSocketRecord =
                     userRecord.mEncapSocketRecords.getRefcountedResourceOrThrow(
                             c.getEncapSocketResourceId());
             dependencies.add(refcountedSocketRecord);
-
             socketRecord = refcountedSocketRecord.getResource();
-            encapLocalPort = socketRecord.getPort();
-            encapRemotePort = c.getEncapRemotePort();
         }
 
-        IpSecAlgorithm auth = c.getAuthentication();
-        IpSecAlgorithm crypt = c.getEncryption();
-        IpSecAlgorithm authCrypt = c.getAuthenticatedEncryption();
-
         RefcountedResource<SpiRecord> refcountedSpiRecord =
                 userRecord.mSpiRecords.getRefcountedResourceOrThrow(c.getSpiResourceId());
         dependencies.add(refcountedSpiRecord);
         SpiRecord spiRecord = refcountedSpiRecord.getResource();
 
         try {
-            mSrvConfig
-                    .getNetdInstance()
-                    .ipSecAddSecurityAssociation(
-                            resourceId,
-                            c.getMode(),
-                            c.getSourceAddress(),
-                            c.getDestinationAddress(),
-                            (c.getNetwork() != null) ? c.getNetwork().netId : 0,
-                            spiRecord.getSpi(),
-                            c.getMarkValue(),
-                            c.getMarkMask(),
-                            (auth != null) ? auth.getName() : "",
-                            (auth != null) ? auth.getKey() : new byte[] {},
-                            (auth != null) ? auth.getTruncationLengthBits() : 0,
-                            (crypt != null) ? crypt.getName() : "",
-                            (crypt != null) ? crypt.getKey() : new byte[] {},
-                            (crypt != null) ? crypt.getTruncationLengthBits() : 0,
-                            (authCrypt != null) ? authCrypt.getName() : "",
-                            (authCrypt != null) ? authCrypt.getKey() : new byte[] {},
-                            (authCrypt != null) ? authCrypt.getTruncationLengthBits() : 0,
-                            encapType,
-                            encapLocalPort,
-                            encapRemotePort);
+            createOrUpdateTransform(c, resourceId, spiRecord, socketRecord);
         } catch (ServiceSpecificException e) {
             // FIXME: get the error code and throw is at an IOException from Errno Exception
             return new IpSecTransformResponse(IpSecManager.Status.RESOURCE_UNAVAILABLE);
         }
-        // Both SAs were created successfully, time to construct a record and lock it away
+
+        // SA was created successfully, time to construct a record and lock it away
         userRecord.mTransformRecords.put(
                 resourceId,
                 new RefcountedResource<TransformRecord>(
@@ -1561,14 +1625,48 @@
                 c.getMode() == IpSecTransform.MODE_TUNNEL,
                 "Transform mode was not Tunnel mode; cannot be applied to a tunnel interface");
 
+        EncapSocketRecord socketRecord = null;
+        if (c.getEncapType() != IpSecTransform.ENCAP_NONE) {
+            socketRecord =
+                    userRecord.mEncapSocketRecords.getResourceOrThrow(c.getEncapSocketResourceId());
+        }
+        SpiRecord spiRecord = userRecord.mSpiRecords.getResourceOrThrow(c.getSpiResourceId());
+
         int mark =
                 (direction == IpSecManager.DIRECTION_IN)
                         ? tunnelInterfaceInfo.getIkey()
                         : tunnelInterfaceInfo.getOkey();
 
-        // TODO: Add calls to netd:
-        //       Update SA with tunnel mark (ikey or okey based on direction)
-        //       If outbound, add SPI to policy
+        try {
+            c.setMarkValue(mark);
+            c.setMarkMask(0xffffffff);
+
+            if (direction == IpSecManager.DIRECTION_OUT) {
+                // Set output mark via underlying network (output only)
+                c.setNetwork(tunnelInterfaceInfo.getUnderlyingNetwork());
+
+                // If outbound, also add SPI to the policy.
+                mSrvConfig
+                        .getNetdInstance()
+                        .ipSecUpdateSecurityPolicy(
+                                0, // Use 0 for reqId
+                                direction,
+                                "",
+                                "",
+                                transformInfo.getSpiRecord().getSpi(),
+                                mark,
+                                0xffffffff);
+            }
+
+            // Update SA with tunnel mark (ikey or okey based on direction)
+            createOrUpdateTransform(c, transformResourceId, spiRecord, socketRecord);
+        } catch (ServiceSpecificException e) {
+            if (e.errorCode == EINVAL) {
+                throw new IllegalArgumentException(e.toString());
+            } else {
+                throw e;
+            }
+        }
     }
 
     @Override
diff --git a/services/core/java/com/android/server/audio/AudioService.java b/services/core/java/com/android/server/audio/AudioService.java
index f54b243..4293d45 100644
--- a/services/core/java/com/android/server/audio/AudioService.java
+++ b/services/core/java/com/android/server/audio/AudioService.java
@@ -136,7 +136,6 @@
 import java.io.PrintWriter;
 import java.lang.reflect.Field;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
@@ -768,7 +767,7 @@
         // Register for device connection intent broadcasts.
         IntentFilter intentFilter =
                 new IntentFilter(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED);
-        intentFilter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
+        intentFilter.addAction(BluetoothHeadset.ACTION_ACTIVE_DEVICE_CHANGED);
         intentFilter.addAction(Intent.ACTION_DOCK_EVENT);
         intentFilter.addAction(Intent.ACTION_SCREEN_ON);
         intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
@@ -2929,14 +2928,28 @@
     }
 
     public void setBluetoothScoOnInt(boolean on, String eventSource) {
+        if (DEBUG_DEVICES) {
+            Log.d(TAG, "setBluetoothScoOnInt: " + on + " " + eventSource);
+        }
         if (on) {
             // do not accept SCO ON if SCO audio is not connected
-            synchronized(mScoClients) {
-                if ((mBluetoothHeadset != null) &&
-                    (mBluetoothHeadset.getAudioState(mBluetoothHeadsetDevice)
-                             != BluetoothHeadset.STATE_AUDIO_CONNECTED)) {
-                    mForcedUseForCommExt = AudioSystem.FORCE_BT_SCO;
-                    return;
+            synchronized (mScoClients) {
+                if (mBluetoothHeadset != null) {
+                    if (mBluetoothHeadsetDevice == null) {
+                        BluetoothDevice activeDevice = mBluetoothHeadset.getActiveDevice();
+                        if (activeDevice != null) {
+                            // setBtScoActiveDevice() might trigger resetBluetoothSco() which
+                            // will call setBluetoothScoOnInt(false, "resetBluetoothSco")
+                            setBtScoActiveDevice(activeDevice);
+                        }
+                    }
+                    if (mBluetoothHeadset.getAudioState(mBluetoothHeadsetDevice)
+                            != BluetoothHeadset.STATE_AUDIO_CONNECTED) {
+                        mForcedUseForCommExt = AudioSystem.FORCE_BT_SCO;
+                        Log.w(TAG, "setBluetoothScoOnInt(true) failed because "
+                                + mBluetoothHeadsetDevice + " is not in audio connected mode");
+                        return;
+                    }
                 }
             }
             mForcedUseForComm = AudioSystem.FORCE_BT_SCO;
@@ -3324,24 +3337,23 @@
         }
     }
 
-    void setBtScoDeviceConnectionState(BluetoothDevice btDevice, int state) {
+    private boolean handleBtScoActiveDeviceChange(BluetoothDevice btDevice, boolean isActive) {
         if (btDevice == null) {
-            return;
+            return true;
         }
-
         String address = btDevice.getAddress();
         BluetoothClass btClass = btDevice.getBluetoothClass();
         int outDevice = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO;
         int inDevice = AudioSystem.DEVICE_IN_BLUETOOTH_SCO_HEADSET;
         if (btClass != null) {
             switch (btClass.getDeviceClass()) {
-            case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET:
-            case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE:
-                outDevice = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
-                break;
-            case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO:
-                outDevice = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
-                break;
+                case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET:
+                case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE:
+                    outDevice = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
+                    break;
+                case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO:
+                    outDevice = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
+                    break;
             }
         }
 
@@ -3349,34 +3361,33 @@
             address = "";
         }
 
-        boolean connected = (state == BluetoothProfile.STATE_CONNECTED);
-
         String btDeviceName =  btDevice.getName();
-        boolean success =
-            handleDeviceConnection(connected, outDevice, address, btDeviceName) &&
-            handleDeviceConnection(connected, inDevice, address, btDeviceName);
+        boolean result = handleDeviceConnection(isActive, outDevice, address, btDeviceName);
+        // handleDeviceConnection() && result to make sure the method get executed
+        result = handleDeviceConnection(isActive, inDevice, address, btDeviceName) && result;
+        return result;
+    }
 
-        if (!success) {
-          return;
+    void setBtScoActiveDevice(BluetoothDevice btDevice) {
+        if (DEBUG_DEVICES) {
+            Log.d(TAG, "setBtScoActiveDevice(" + btDevice + ")");
         }
-
-        /* When one BT headset is disconnected while another BT headset
-         * is connected, don't mess with the headset device.
-         */
-        if ((state == BluetoothProfile.STATE_DISCONNECTED ||
-            state == BluetoothProfile.STATE_DISCONNECTING) &&
-            mBluetoothHeadset != null &&
-            mBluetoothHeadset.getAudioState(btDevice) == BluetoothHeadset.STATE_AUDIO_CONNECTED) {
-            Log.w(TAG, "SCO connected through another device, returning");
-            return;
-        }
-
         synchronized (mScoClients) {
-            if (connected) {
+            final BluetoothDevice previousActiveDevice = mBluetoothHeadsetDevice;
+            if (!Objects.equals(btDevice, previousActiveDevice)) {
+                if (!handleBtScoActiveDeviceChange(previousActiveDevice, false)) {
+                    Log.w(TAG, "setBtScoActiveDevice() failed to remove previous device "
+                            + previousActiveDevice);
+                }
+                if (!handleBtScoActiveDeviceChange(btDevice, true)) {
+                    Log.e(TAG, "setBtScoActiveDevice() failed to add new device " + btDevice);
+                    // set mBluetoothHeadsetDevice to null when failing to add new device
+                    btDevice = null;
+                }
                 mBluetoothHeadsetDevice = btDevice;
-            } else {
-                mBluetoothHeadsetDevice = null;
-                resetBluetoothSco();
+                if (mBluetoothHeadsetDevice == null) {
+                    resetBluetoothSco();
+                }
             }
         }
     }
@@ -3431,12 +3442,7 @@
                     // Discard timeout message
                     mAudioHandler.removeMessages(MSG_BT_HEADSET_CNCT_FAILED);
                     mBluetoothHeadset = (BluetoothHeadset) proxy;
-                    deviceList = mBluetoothHeadset.getConnectedDevices();
-                    if (deviceList.size() > 0) {
-                        mBluetoothHeadsetDevice = deviceList.get(0);
-                    } else {
-                        mBluetoothHeadsetDevice = null;
-                    }
+                    setBtScoActiveDevice(mBluetoothHeadset.getActiveDevice());
                     // Refresh SCO audio state
                     checkScoAudioState();
                     // Continue pending action if any
@@ -3557,10 +3563,7 @@
 
     void disconnectHeadset() {
         synchronized (mScoClients) {
-            if (mBluetoothHeadsetDevice != null) {
-                setBtScoDeviceConnectionState(mBluetoothHeadsetDevice,
-                        BluetoothProfile.STATE_DISCONNECTED);
-            }
+            setBtScoActiveDevice(null);
             mBluetoothHeadset = null;
         }
     }
@@ -5732,11 +5735,9 @@
                     AudioSystem.setForceUse(AudioSystem.FOR_DOCK, config);
                 }
                 mDockState = dockState;
-            } else if (action.equals(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED)) {
-                state = intent.getIntExtra(BluetoothProfile.EXTRA_STATE,
-                                               BluetoothProfile.STATE_DISCONNECTED);
+            } else if (action.equals(BluetoothHeadset.ACTION_ACTIVE_DEVICE_CHANGED)) {
                 BluetoothDevice btDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
-                setBtScoDeviceConnectionState(btDevice, state);
+                setBtScoActiveDevice(btDevice);
             } else if (action.equals(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED)) {
                 boolean broadcast = false;
                 int scoAudioState = AudioManager.SCO_AUDIO_STATE_ERROR;
diff --git a/telephony/java/android/telephony/AccessNetworkConstants.java b/telephony/java/android/telephony/AccessNetworkConstants.java
index 703f96d..7cd16128 100644
--- a/telephony/java/android/telephony/AccessNetworkConstants.java
+++ b/telephony/java/android/telephony/AccessNetworkConstants.java
@@ -24,6 +24,7 @@
 public final class AccessNetworkConstants {
 
     public static final class AccessNetworkType {
+        public static final int UNKNOWN = 0;
         public static final int GERAN = 1;
         public static final int UTRAN = 2;
         public static final int EUTRAN = 3;
diff --git a/telephony/java/android/telephony/DisconnectCause.java b/telephony/java/android/telephony/DisconnectCause.java
index 56e1e64..4fa304a 100644
--- a/telephony/java/android/telephony/DisconnectCause.java
+++ b/telephony/java/android/telephony/DisconnectCause.java
@@ -310,6 +310,13 @@
      * {@hide}
      */
     public static final int DIAL_VIDEO_MODIFIED_TO_DIAL_VIDEO = 70;
+
+    /**
+     * The network has reported that an alternative emergency number has been dialed, but the user
+     * must exit airplane mode to place the call.
+     */
+    public static final int IMS_SIP_ALTERNATE_EMERGENCY_CALL = 71;
+
     //*********************************************************************************************
     // When adding a disconnect type:
     // 1) Update toString() with the newly added disconnect type.
@@ -462,6 +469,8 @@
             return "EMERGENCY_PERM_FAILURE";
         case NORMAL_UNSPECIFIED:
             return "NORMAL_UNSPECIFIED";
+        case IMS_SIP_ALTERNATE_EMERGENCY_CALL:
+            return "IMS_SIP_ALTERNATE_EMERGENCY_CALL";
         default:
             return "INVALID: " + cause;
         }
diff --git a/telephony/java/android/telephony/INetworkService.aidl b/telephony/java/android/telephony/INetworkService.aidl
new file mode 100644
index 0000000..d810d58
--- /dev/null
+++ b/telephony/java/android/telephony/INetworkService.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.telephony.INetworkServiceCallback;
+
+/**
+ * {@hide}
+ */
+oneway interface INetworkService
+{
+    void getNetworkRegistrationState(int domain, INetworkServiceCallback callback);
+    void registerForNetworkRegistrationStateChanged(INetworkServiceCallback callback);
+    void unregisterForNetworkRegistrationStateChanged(INetworkServiceCallback callback);
+}
diff --git a/telephony/java/android/telephony/INetworkServiceCallback.aidl b/telephony/java/android/telephony/INetworkServiceCallback.aidl
new file mode 100644
index 0000000..520598f
--- /dev/null
+++ b/telephony/java/android/telephony/INetworkServiceCallback.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.telephony.NetworkRegistrationState;
+
+/**
+ * Network service call back interface
+ * @hide
+ */
+oneway interface INetworkServiceCallback
+{
+    void onGetNetworkRegistrationStateComplete(int result, in NetworkRegistrationState state);
+    void onNetworkStateChanged();
+}
diff --git a/telephony/java/android/telephony/NetworkRegistrationState.aidl b/telephony/java/android/telephony/NetworkRegistrationState.aidl
new file mode 100644
index 0000000..98cba77
--- /dev/null
+++ b/telephony/java/android/telephony/NetworkRegistrationState.aidl
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+parcelable NetworkRegistrationState;
diff --git a/telephony/java/android/telephony/NetworkRegistrationState.java b/telephony/java/android/telephony/NetworkRegistrationState.java
new file mode 100644
index 0000000..e051069
--- /dev/null
+++ b/telephony/java/android/telephony/NetworkRegistrationState.java
@@ -0,0 +1,258 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.annotation.IntDef;
+import android.annotation.Nullable;
+import android.annotation.SystemApi;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.util.Arrays;
+import java.util.Objects;
+
+/**
+ * Description of a mobile network registration state
+ * @hide
+ */
+@SystemApi
+public class NetworkRegistrationState implements Parcelable {
+    /**
+     * Network domain
+     * @hide
+     */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = "DOMAIN_", value = {DOMAIN_CS, DOMAIN_PS})
+    public @interface Domain {}
+
+    /** Circuit switching domain */
+    public static final int DOMAIN_CS = 1;
+    /** Packet switching domain */
+    public static final int DOMAIN_PS = 2;
+
+    /**
+     * Registration state
+     * @hide
+     */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = "REG_STATE_",
+            value = {REG_STATE_NOT_REG_NOT_SEARCHING, REG_STATE_HOME, REG_STATE_NOT_REG_SEARCHING,
+                    REG_STATE_DENIED, REG_STATE_UNKNOWN, REG_STATE_ROAMING})
+    public @interface RegState {}
+
+    /** Not registered. The device is not currently searching a new operator to register */
+    public static final int REG_STATE_NOT_REG_NOT_SEARCHING = 0;
+    /** Registered on home network */
+    public static final int REG_STATE_HOME = 1;
+    /** Not registered. The device is currently searching a new operator to register */
+    public static final int REG_STATE_NOT_REG_SEARCHING = 2;
+    /** Registration denied */
+    public static final int REG_STATE_DENIED = 3;
+    /** Registration state is unknown */
+    public static final int REG_STATE_UNKNOWN = 4;
+    /** Registered on roaming network */
+    public static final int REG_STATE_ROAMING = 5;
+
+    /**
+     * Supported service type
+     * @hide
+     */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef(prefix = "SERVICE_TYPE_",
+            value = {SERVICE_TYPE_VOICE, SERVICE_TYPE_DATA, SERVICE_TYPE_SMS, SERVICE_TYPE_VIDEO,
+                    SERVICE_TYPE_EMERGENCY})
+    public @interface ServiceType {}
+
+    public static final int SERVICE_TYPE_VOICE = 1;
+    public static final int SERVICE_TYPE_DATA = 2;
+    public static final int SERVICE_TYPE_SMS = 3;
+    public static final int SERVICE_TYPE_VIDEO = 4;
+    public static final int SERVICE_TYPE_EMERGENCY = 5;
+
+    /** {@link AccessNetworkConstants.TransportType}*/
+    private final int mTransportType;
+
+    @Domain
+    private final int mDomain;
+
+    @RegState
+    private final int mRegState;
+
+    private final int mAccessNetworkTechnology;
+
+    private final int mReasonForDenial;
+
+    private final boolean mEmergencyOnly;
+
+    private final int[] mAvailableServices;
+
+    @Nullable
+    private final CellIdentity mCellIdentity;
+
+
+    /**
+     * @param transportType Transport type. Must be {@link AccessNetworkConstants.TransportType}
+     * @param domain Network domain. Must be DOMAIN_CS or DOMAIN_PS.
+     * @param regState Network registration state.
+     * @param accessNetworkTechnology See TelephonyManager NETWORK_TYPE_XXXX.
+     * @param reasonForDenial Reason for denial if the registration state is DENIED.
+     * @param availableServices The supported service.
+     * @param cellIdentity The identity representing a unique cell
+     */
+    public NetworkRegistrationState(int transportType, int domain, int regState,
+            int accessNetworkTechnology, int reasonForDenial, boolean emergencyOnly,
+            int[] availableServices, @Nullable CellIdentity cellIdentity) {
+        mTransportType = transportType;
+        mDomain = domain;
+        mRegState = regState;
+        mAccessNetworkTechnology = accessNetworkTechnology;
+        mReasonForDenial = reasonForDenial;
+        mAvailableServices = availableServices;
+        mCellIdentity = cellIdentity;
+        mEmergencyOnly = emergencyOnly;
+    }
+
+    protected NetworkRegistrationState(Parcel source) {
+        mTransportType = source.readInt();
+        mDomain = source.readInt();
+        mRegState = source.readInt();
+        mAccessNetworkTechnology = source.readInt();
+        mReasonForDenial = source.readInt();
+        mEmergencyOnly = source.readBoolean();
+        mAvailableServices = source.createIntArray();
+        mCellIdentity = source.readParcelable(CellIdentity.class.getClassLoader());
+    }
+
+    /**
+     * @return The transport type.
+     */
+    public int getTransportType() { return mTransportType; }
+
+    /**
+     * @return The network domain.
+     */
+    public @Domain int getDomain() { return mDomain; }
+
+    /**
+     * @return The registration state.
+     */
+    public @RegState int getRegState() {
+        return mRegState;
+    }
+
+    /**
+     * @return Whether emergency is enabled.
+     */
+    public boolean isEmergencyEnabled() { return mEmergencyOnly; }
+
+    /**
+     * @return List of available service types.
+     */
+    public int[] getAvailableServices() { return mAvailableServices; }
+
+    /**
+     * @return The access network technology. Must be one of TelephonyManager.NETWORK_TYPE_XXXX.
+     */
+    public int getAccessNetworkTechnology() {
+        return mAccessNetworkTechnology;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    private static String regStateToString(int regState) {
+        switch (regState) {
+            case REG_STATE_NOT_REG_NOT_SEARCHING: return "NOT_REG_NOT_SEARCHING";
+            case REG_STATE_HOME: return "HOME";
+            case REG_STATE_NOT_REG_SEARCHING: return "NOT_REG_SEARCHING";
+            case REG_STATE_DENIED: return "DENIED";
+            case REG_STATE_UNKNOWN: return "UNKNOWN";
+            case REG_STATE_ROAMING: return "ROAMING";
+        }
+        return "Unknown reg state " + regState;
+    }
+
+    @Override
+    public String toString() {
+        return new StringBuilder("NetworkRegistrationState{")
+                .append("transportType=").append(mTransportType)
+                .append(" domain=").append((mDomain == DOMAIN_CS) ? "CS" : "PS")
+                .append(" regState=").append(regStateToString(mRegState))
+                .append(" accessNetworkTechnology=")
+                .append(TelephonyManager.getNetworkTypeName(mAccessNetworkTechnology))
+                .append(" reasonForDenial=").append(mReasonForDenial)
+                .append(" emergencyEnabled=").append(mEmergencyOnly)
+                .append(" supportedServices=").append(mAvailableServices)
+                .append(" cellIdentity=").append(mCellIdentity)
+                .append("}").toString();
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mTransportType, mDomain, mRegState, mAccessNetworkTechnology,
+                mReasonForDenial, mEmergencyOnly, mAvailableServices, mCellIdentity);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+
+        if (o == null || !(o instanceof NetworkRegistrationState)) {
+            return false;
+        }
+
+        NetworkRegistrationState other = (NetworkRegistrationState) o;
+        return mTransportType == other.mTransportType
+                && mDomain == other.mDomain
+                && mRegState == other.mRegState
+                && mAccessNetworkTechnology == other.mAccessNetworkTechnology
+                && mReasonForDenial == other.mReasonForDenial
+                && mEmergencyOnly == other.mEmergencyOnly
+                && (mAvailableServices == other.mAvailableServices
+                    || Arrays.equals(mAvailableServices, other.mAvailableServices))
+                && mCellIdentity == other.mCellIdentity;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(mTransportType);
+        dest.writeInt(mDomain);
+        dest.writeInt(mRegState);
+        dest.writeInt(mAccessNetworkTechnology);
+        dest.writeInt(mReasonForDenial);
+        dest.writeBoolean(mEmergencyOnly);
+        dest.writeIntArray(mAvailableServices);
+        dest.writeParcelable(mCellIdentity, 0);
+    }
+
+    public static final Parcelable.Creator<NetworkRegistrationState> CREATOR =
+            new Parcelable.Creator<NetworkRegistrationState>() {
+        @Override
+        public NetworkRegistrationState createFromParcel(Parcel source) {
+            return new NetworkRegistrationState(source);
+        }
+
+        @Override
+        public NetworkRegistrationState[] newArray(int size) {
+            return new NetworkRegistrationState[size];
+        }
+    };
+}
diff --git a/telephony/java/android/telephony/NetworkService.java b/telephony/java/android/telephony/NetworkService.java
new file mode 100644
index 0000000..6b3584c
--- /dev/null
+++ b/telephony/java/android/telephony/NetworkService.java
@@ -0,0 +1,314 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.annotation.CallSuper;
+import android.annotation.SystemApi;
+import android.app.Service;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.IBinder;
+import android.os.Looper;
+import android.os.Message;
+import android.os.RemoteException;
+import android.util.SparseArray;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Base class of network service. Services that extend NetworkService must register the service in
+ * their AndroidManifest to be detected by the framework. They must be protected by the permission
+ * "android.permission.BIND_NETWORK_SERVICE". The network service definition in the manifest must
+ * follow the following format:
+ * ...
+ * <service android:name=".xxxNetworkService"
+ *     android:permission="android.permission.BIND_NETWORK_SERVICE" >
+ *     <intent-filter>
+ *         <action android:name="android.telephony.NetworkService" />
+ *     </intent-filter>
+ * </service>
+ * @hide
+ */
+@SystemApi
+public abstract class NetworkService extends Service {
+
+    private final String TAG = NetworkService.class.getSimpleName();
+
+    public static final String NETWORK_SERVICE_INTERFACE = "android.telephony.NetworkService";
+    public static final String NETWORK_SERVICE_EXTRA_SLOT_ID = "android.telephony.extra.SLOT_ID";
+
+    private static final int NETWORK_SERVICE_INTERNAL_REQUEST_INITIALIZE_SERVICE       = 1;
+    private static final int NETWORK_SERVICE_GET_REGISTRATION_STATE                    = 2;
+    private static final int NETWORK_SERVICE_REGISTER_FOR_STATE_CHANGE                 = 3;
+    private static final int NETWORK_SERVICE_UNREGISTER_FOR_STATE_CHANGE               = 4;
+    private static final int NETWORK_SERVICE_INDICATION_NETWORK_STATE_CHANGED          = 5;
+
+
+    private final HandlerThread mHandlerThread;
+
+    private final NetworkServiceHandler mHandler;
+
+    private final SparseArray<NetworkServiceProvider> mServiceMap = new SparseArray<>();
+
+    private final SparseArray<INetworkServiceWrapper> mBinderMap = new SparseArray<>();
+
+    /**
+     * The abstract class of the actual network service implementation. The network service provider
+     * must extend this class to support network connection. Note that each instance of network
+     * service is associated with one physical SIM slot.
+     */
+    public class NetworkServiceProvider {
+        private final int mSlotId;
+
+        private final List<INetworkServiceCallback>
+                mNetworkRegistrationStateChangedCallbacks = new ArrayList<>();
+
+        public NetworkServiceProvider(int slotId) {
+            mSlotId = slotId;
+        }
+
+        /**
+         * @return SIM slot id the network service associated with.
+         */
+        public final int getSlotId() {
+            return mSlotId;
+        }
+
+        /**
+         * API to get network registration state. The result will be passed to the callback.
+         * @param domain
+         * @param callback
+         * @return SIM slot id the network service associated with.
+         */
+        public void getNetworkRegistrationState(int domain, NetworkServiceCallback callback) {
+            callback.onGetNetworkRegistrationStateComplete(
+                    NetworkServiceCallback.RESULT_ERROR_UNSUPPORTED, null);
+        }
+
+        public final void notifyNetworkRegistrationStateChanged() {
+            mHandler.obtainMessage(NETWORK_SERVICE_INDICATION_NETWORK_STATE_CHANGED,
+                    mSlotId, 0, null).sendToTarget();
+        }
+
+        private void registerForStateChanged(INetworkServiceCallback callback) {
+            synchronized (mNetworkRegistrationStateChangedCallbacks) {
+                mNetworkRegistrationStateChangedCallbacks.add(callback);
+            }
+        }
+
+        private void unregisterForStateChanged(INetworkServiceCallback callback) {
+            synchronized (mNetworkRegistrationStateChangedCallbacks) {
+                mNetworkRegistrationStateChangedCallbacks.remove(callback);
+            }
+        }
+
+        private void notifyStateChangedToCallbacks() {
+            for (INetworkServiceCallback callback : mNetworkRegistrationStateChangedCallbacks) {
+                try {
+                    callback.onNetworkStateChanged();
+                } catch (RemoteException exception) {
+                    // Doing nothing.
+                }
+            }
+        }
+
+        /**
+         * Called when the instance of network service is destroyed (e.g. got unbind or binder died).
+         */
+        @CallSuper
+        protected void onDestroy() {
+            mNetworkRegistrationStateChangedCallbacks.clear();
+        }
+    }
+
+    private class NetworkServiceHandler extends Handler {
+
+        NetworkServiceHandler(Looper looper) {
+            super(looper);
+        }
+
+        @Override
+        public void handleMessage(Message message) {
+            final int slotId = message.arg1;
+            final INetworkServiceCallback callback = (INetworkServiceCallback) message.obj;
+            NetworkServiceProvider service;
+
+            synchronized (mServiceMap) {
+                service = mServiceMap.get(slotId);
+            }
+
+            switch (message.what) {
+                case NETWORK_SERVICE_INTERNAL_REQUEST_INITIALIZE_SERVICE:
+                    service = createNetworkServiceProvider(message.arg1);
+                    if (service != null) {
+                        mServiceMap.put(slotId, service);
+                    }
+                    break;
+                case NETWORK_SERVICE_GET_REGISTRATION_STATE:
+                    if (service == null) break;
+                    int domainId = message.arg2;
+                    service.getNetworkRegistrationState(domainId,
+                            new NetworkServiceCallback(callback));
+
+                    break;
+                case NETWORK_SERVICE_REGISTER_FOR_STATE_CHANGE:
+                    if (service == null) break;
+                    service.registerForStateChanged(callback);
+                    break;
+                case NETWORK_SERVICE_UNREGISTER_FOR_STATE_CHANGE:
+                    if (service == null) break;
+                    service.unregisterForStateChanged(callback);
+                    break;
+                case NETWORK_SERVICE_INDICATION_NETWORK_STATE_CHANGED:
+                    if (service == null) break;
+                    service.notifyStateChangedToCallbacks();
+                    break;
+                default:
+                    break;
+            }
+        }
+    }
+
+    /** @hide */
+    protected NetworkService() {
+        mHandlerThread = new HandlerThread(TAG);
+        mHandlerThread.start();
+
+        mHandler = new NetworkServiceHandler(mHandlerThread.getLooper());
+        log("network service created");
+    }
+
+    /**
+     * Create the instance of {@link NetworkServiceProvider}. Network service provider must override
+     * this method to facilitate the creation of {@link NetworkServiceProvider} instances. The system
+     * will call this method after binding the network service for each active SIM slot id.
+     *
+     * @param slotId SIM slot id the network service associated with.
+     * @return Network service object
+     */
+    protected abstract NetworkServiceProvider createNetworkServiceProvider(int slotId);
+
+    /** @hide */
+    @Override
+    public IBinder onBind(Intent intent) {
+        if (intent == null || !NETWORK_SERVICE_INTERFACE.equals(intent.getAction())) {
+            loge("Unexpected intent " + intent);
+            return null;
+        }
+
+        int slotId = intent.getIntExtra(
+                NETWORK_SERVICE_EXTRA_SLOT_ID, SubscriptionManager.INVALID_SIM_SLOT_INDEX);
+
+        if (!SubscriptionManager.isValidSlotIndex(slotId)) {
+            loge("Invalid slot id " + slotId);
+            return null;
+        }
+
+        log("onBind: slot id=" + slotId);
+
+        INetworkServiceWrapper binder = mBinderMap.get(slotId);
+        if (binder == null) {
+            Message msg = mHandler.obtainMessage(
+                    NETWORK_SERVICE_INTERNAL_REQUEST_INITIALIZE_SERVICE);
+            msg.arg1 = slotId;
+            msg.sendToTarget();
+
+            binder = new INetworkServiceWrapper(slotId);
+            mBinderMap.put(slotId, binder);
+        }
+
+        return binder;
+    }
+
+    /** @hide */
+    @Override
+    public boolean onUnbind(Intent intent) {
+        int slotId = intent.getIntExtra(NETWORK_SERVICE_EXTRA_SLOT_ID,
+                SubscriptionManager.INVALID_SIM_SLOT_INDEX);
+        if (mBinderMap.get(slotId) != null) {
+            NetworkServiceProvider serviceImpl;
+            synchronized (mServiceMap) {
+                serviceImpl = mServiceMap.get(slotId);
+            }
+            // We assume only one component might bind to the service. So if onUnbind is ever
+            // called, we destroy the serviceImpl.
+            if (serviceImpl != null) {
+                serviceImpl.onDestroy();
+            }
+            mBinderMap.remove(slotId);
+        }
+
+        return false;
+    }
+
+    /** @hide */
+    @Override
+    public void onDestroy() {
+        synchronized (mServiceMap) {
+            for (int i = 0; i < mServiceMap.size(); i++) {
+                NetworkServiceProvider serviceImpl = mServiceMap.get(i);
+                if (serviceImpl != null) {
+                    serviceImpl.onDestroy();
+                }
+            }
+            mServiceMap.clear();
+        }
+
+        mHandlerThread.quit();
+    }
+
+    /**
+     * A wrapper around INetworkService that forwards calls to implementations of
+     * {@link NetworkService}.
+     */
+    private class INetworkServiceWrapper extends INetworkService.Stub {
+
+        private final int mSlotId;
+
+        INetworkServiceWrapper(int slotId) {
+            mSlotId = slotId;
+        }
+
+        @Override
+        public void getNetworkRegistrationState(int domain, INetworkServiceCallback callback) {
+            mHandler.obtainMessage(NETWORK_SERVICE_GET_REGISTRATION_STATE, mSlotId,
+                    domain, callback).sendToTarget();
+        }
+
+        @Override
+        public void registerForNetworkRegistrationStateChanged(INetworkServiceCallback callback) {
+            mHandler.obtainMessage(NETWORK_SERVICE_REGISTER_FOR_STATE_CHANGE, mSlotId,
+                    0, callback).sendToTarget();
+        }
+
+        @Override
+        public void unregisterForNetworkRegistrationStateChanged(INetworkServiceCallback callback) {
+            mHandler.obtainMessage(NETWORK_SERVICE_UNREGISTER_FOR_STATE_CHANGE, mSlotId,
+                    0, callback).sendToTarget();
+        }
+    }
+
+    private final void log(String s) {
+        Rlog.d(TAG, s);
+    }
+
+    private final void loge(String s) {
+        Rlog.e(TAG, s);
+    }
+}
\ No newline at end of file
diff --git a/telephony/java/android/telephony/NetworkServiceCallback.java b/telephony/java/android/telephony/NetworkServiceCallback.java
new file mode 100644
index 0000000..92ebf36
--- /dev/null
+++ b/telephony/java/android/telephony/NetworkServiceCallback.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.annotation.IntDef;
+import android.annotation.SystemApi;
+import android.os.RemoteException;
+import android.telephony.NetworkService.NetworkServiceProvider;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.ref.WeakReference;
+
+/**
+ * Network service callback. Object of this class is passed to NetworkServiceProvider upon
+ * calling getNetworkRegistrationState, to receive asynchronous feedback from NetworkServiceProvider
+ * upon onGetNetworkRegistrationStateComplete. It's like a wrapper of INetworkServiceCallback
+ * because INetworkServiceCallback can't be a parameter type in public APIs.
+ *
+ * @hide
+ */
+@SystemApi
+public class NetworkServiceCallback {
+
+    private static final String mTag = NetworkServiceCallback.class.getSimpleName();
+
+    /**
+     * Result of network requests
+     * @hide
+     */
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({RESULT_SUCCESS, RESULT_ERROR_UNSUPPORTED, RESULT_ERROR_INVALID_ARG, RESULT_ERROR_BUSY,
+            RESULT_ERROR_ILLEGAL_STATE, RESULT_ERROR_FAILED})
+    public @interface Result {}
+
+    /** Request is completed successfully */
+    public static final int RESULT_SUCCESS              = 0;
+    /** Request is not support */
+    public static final int RESULT_ERROR_UNSUPPORTED    = 1;
+    /** Request contains invalid arguments */
+    public static final int RESULT_ERROR_INVALID_ARG    = 2;
+    /** Service is busy */
+    public static final int RESULT_ERROR_BUSY           = 3;
+    /** Request sent in illegal state */
+    public static final int RESULT_ERROR_ILLEGAL_STATE  = 4;
+    /** Request failed */
+    public static final int RESULT_ERROR_FAILED         = 5;
+
+    private final WeakReference<INetworkServiceCallback> mCallback;
+
+    /** @hide */
+    public NetworkServiceCallback(INetworkServiceCallback callback) {
+        mCallback = new WeakReference<>(callback);
+    }
+
+    /**
+     * Called to indicate result of
+     * {@link NetworkServiceProvider#getNetworkRegistrationState(int, NetworkServiceCallback)}
+     *
+     * @param result Result status like {@link NetworkServiceCallback#RESULT_SUCCESS} or
+     *                {@link NetworkServiceCallback#RESULT_ERROR_UNSUPPORTED}
+     * @param state The state information to be returned to callback.
+     */
+    public void onGetNetworkRegistrationStateComplete(int result, NetworkRegistrationState state) {
+        INetworkServiceCallback callback = mCallback.get();
+        if (callback != null) {
+            try {
+                callback.onGetNetworkRegistrationStateComplete(result, state);
+            } catch (RemoteException e) {
+                Rlog.e(mTag, "Failed to onGetNetworkRegistrationStateComplete on the remote");
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/telephony/java/android/telephony/PhoneStateListener.java b/telephony/java/android/telephony/PhoneStateListener.java
index 98ea451..0ee870a 100644
--- a/telephony/java/android/telephony/PhoneStateListener.java
+++ b/telephony/java/android/telephony/PhoneStateListener.java
@@ -251,7 +251,15 @@
      */
     public static final int LISTEN_USER_MOBILE_DATA_STATE                  = 0x00080000;
 
-     /*
+    /**
+     *  Listen for changes to the physical channel configuration.
+     *
+     *  @see #onPhysicalChannelConfigurationChanged
+     *  @hide
+     */
+    public static final int LISTEN_PHYSICAL_CHANNEL_CONFIGURATION          = 0x00100000;
+
+    /*
      * Subscription used to listen to the phone state changes
      * @hide
      */
@@ -362,7 +370,10 @@
                     case LISTEN_CARRIER_NETWORK_CHANGE:
                         PhoneStateListener.this.onCarrierNetworkChange((boolean)msg.obj);
                         break;
-
+                    case LISTEN_PHYSICAL_CHANNEL_CONFIGURATION:
+                        PhoneStateListener.this.onPhysicalChannelConfigurationChanged(
+                            (List<PhysicalChannelConfig>)msg.obj);
+                        break;
                 }
             }
         };
@@ -561,6 +572,16 @@
     }
 
     /**
+     * Callback invoked when the current physical channel configuration has changed
+     *
+     * @param configs List of the current {@link PhysicalChannelConfig}s
+     * @hide
+     */
+    public void onPhysicalChannelConfigurationChanged(List<PhysicalChannelConfig> configs) {
+        // default implementation empty
+    }
+
+    /**
      * Callback invoked when telephony has received notice from a carrier
      * app that a network action that could result in connectivity loss
      * has been requested by an app using
diff --git a/telephony/java/android/telephony/PhysicalChannelConfig.aidl b/telephony/java/android/telephony/PhysicalChannelConfig.aidl
new file mode 100644
index 0000000..651c103
--- /dev/null
+++ b/telephony/java/android/telephony/PhysicalChannelConfig.aidl
@@ -0,0 +1,20 @@
+/*
+**
+** Copyright 2018, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+package android.telephony;
+
+parcelable PhysicalChannelConfig;
\ No newline at end of file
diff --git a/telephony/java/android/telephony/PhysicalChannelConfig.java b/telephony/java/android/telephony/PhysicalChannelConfig.java
new file mode 100644
index 0000000..651d68d
--- /dev/null
+++ b/telephony/java/android/telephony/PhysicalChannelConfig.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.telephony;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.annotation.IntDef;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * @hide
+ */
+public final class PhysicalChannelConfig implements Parcelable {
+
+    @Retention(RetentionPolicy.SOURCE)
+    @IntDef({CONNECTION_PRIMARY_SERVING, CONNECTION_SECONDARY_SERVING})
+    public @interface ConnectionStatus {}
+
+    /**
+     * UE has connection to cell for signalling and possibly data (3GPP 36.331, 25.331).
+     */
+    public static final int CONNECTION_PRIMARY_SERVING = 1;
+
+    /**
+     * UE has connection to cell for data (3GPP 36.331, 25.331).
+     */
+    public static final int CONNECTION_SECONDARY_SERVING = 2;
+
+    /**
+     * Connection status of the cell.
+     *
+     * <p>One of {@link #CONNECTION_PRIMARY_SERVING}, {@link #CONNECTION_SECONDARY_SERVING}.
+     */
+    private int mCellConnectionStatus;
+
+    /**
+     * Cell bandwidth, in kHz.
+     */
+    private int mCellBandwidthDownlinkKhz;
+
+    public PhysicalChannelConfig(int status, int bandwidth) {
+        mCellConnectionStatus = status;
+        mCellBandwidthDownlinkKhz = bandwidth;
+    }
+
+    public PhysicalChannelConfig(Parcel in) {
+        mCellConnectionStatus = in.readInt();
+        mCellBandwidthDownlinkKhz = in.readInt();
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(mCellConnectionStatus);
+        dest.writeInt(mCellBandwidthDownlinkKhz);
+    }
+
+    /**
+     * @return Cell bandwidth, in kHz
+     */
+    public int getCellBandwidthDownlink() {
+        return mCellBandwidthDownlinkKhz;
+    }
+
+    /**
+     * Gets the connection status of the cell.
+     *
+     * @see #CONNECTION_PRIMARY_SERVING
+     * @see #CONNECTION_SECONDARY_SERVING
+     *
+     * @return Connection status of the cell
+     */
+    @ConnectionStatus
+    public int getConnectionStatus() {
+        return mCellConnectionStatus;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof PhysicalChannelConfig)) {
+            return false;
+        }
+
+        PhysicalChannelConfig config = (PhysicalChannelConfig) o;
+        return mCellConnectionStatus == config.mCellConnectionStatus
+                && mCellBandwidthDownlinkKhz == config.mCellBandwidthDownlinkKhz;
+    }
+
+    @Override
+    public int hashCode() {
+        return (mCellBandwidthDownlinkKhz * 29) + (mCellConnectionStatus * 31);
+    }
+
+    public static final Parcelable.Creator<PhysicalChannelConfig> CREATOR =
+        new Parcelable.Creator<PhysicalChannelConfig>() {
+            public PhysicalChannelConfig createFromParcel(Parcel in) {
+                return new PhysicalChannelConfig(in);
+            }
+
+            public PhysicalChannelConfig[] newArray(int size) {
+                return new PhysicalChannelConfig[size];
+            }
+        };
+}
diff --git a/telephony/java/android/telephony/ServiceState.java b/telephony/java/android/telephony/ServiceState.java
index d4b4b88..77706e8 100644
--- a/telephony/java/android/telephony/ServiceState.java
+++ b/telephony/java/android/telephony/ServiceState.java
@@ -17,6 +17,7 @@
 package android.telephony;
 
 import android.annotation.IntDef;
+import android.annotation.SystemApi;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -25,6 +26,9 @@
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Contains phone state and service related information.
  *
@@ -286,6 +290,8 @@
      * Reference: 3GPP TS 36.104 5.4.3 */
     private int mLteEarfcnRsrpBoost = 0;
 
+    private List<NetworkRegistrationState> mNetworkRegistrationStates = new ArrayList<>();
+
     /**
      * get String description of roaming type
      * @hide
@@ -366,6 +372,7 @@
         mIsDataRoamingFromRegistration = s.mIsDataRoamingFromRegistration;
         mIsUsingCarrierAggregation = s.mIsUsingCarrierAggregation;
         mLteEarfcnRsrpBoost = s.mLteEarfcnRsrpBoost;
+        mNetworkRegistrationStates = new ArrayList<>(s.mNetworkRegistrationStates);
     }
 
     /**
@@ -396,6 +403,8 @@
         mIsDataRoamingFromRegistration = in.readInt() != 0;
         mIsUsingCarrierAggregation = in.readInt() != 0;
         mLteEarfcnRsrpBoost = in.readInt();
+        mNetworkRegistrationStates = new ArrayList<>();
+        in.readList(mNetworkRegistrationStates, NetworkRegistrationState.class.getClassLoader());
     }
 
     public void writeToParcel(Parcel out, int flags) {
@@ -423,6 +432,7 @@
         out.writeInt(mIsDataRoamingFromRegistration ? 1 : 0);
         out.writeInt(mIsUsingCarrierAggregation ? 1 : 0);
         out.writeInt(mLteEarfcnRsrpBoost);
+        out.writeList(mNetworkRegistrationStates);
     }
 
     public int describeContents() {
@@ -751,13 +761,14 @@
                         s.mCdmaDefaultRoamingIndicator)
                 && mIsEmergencyOnly == s.mIsEmergencyOnly
                 && mIsDataRoamingFromRegistration == s.mIsDataRoamingFromRegistration
-                && mIsUsingCarrierAggregation == s.mIsUsingCarrierAggregation);
+                && mIsUsingCarrierAggregation == s.mIsUsingCarrierAggregation)
+                && mNetworkRegistrationStates.containsAll(s.mNetworkRegistrationStates);
     }
 
     /**
      * Convert radio technology to String
      *
-     * @param radioTechnology
+     * @param rt radioTechnology
      * @return String representation of the RAT
      *
      * @hide
@@ -884,6 +895,7 @@
             .append(", mIsDataRoamingFromRegistration=").append(mIsDataRoamingFromRegistration)
             .append(", mIsUsingCarrierAggregation=").append(mIsUsingCarrierAggregation)
             .append(", mLteEarfcnRsrpBoost=").append(mLteEarfcnRsrpBoost)
+            .append(", mNetworkRegistrationStates=").append(mNetworkRegistrationStates)
             .append("}").toString();
     }
 
@@ -913,6 +925,7 @@
         mIsDataRoamingFromRegistration = false;
         mIsUsingCarrierAggregation = false;
         mLteEarfcnRsrpBoost = 0;
+        mNetworkRegistrationStates = new ArrayList<>();
     }
 
     public void setStateOutOfService() {
@@ -1394,4 +1407,52 @@
 
         return newSs;
     }
+
+    /**
+     * Get all of the available network registration states.
+     *
+     * @return List of registration states
+     * @hide
+     */
+    @SystemApi
+    public List<NetworkRegistrationState> getNetworkRegistrationStates() {
+        return mNetworkRegistrationStates;
+    }
+
+    /**
+     * Get the network registration states with given transport type.
+     *
+     * @param transportType The transport type. See {@link AccessNetworkConstants.TransportType}
+     * @return List of registration states.
+     * @hide
+     */
+    @SystemApi
+    public List<NetworkRegistrationState> getNetworkRegistrationStates(int transportType) {
+        List<NetworkRegistrationState> list = new ArrayList<>();
+        for (NetworkRegistrationState networkRegistrationState : mNetworkRegistrationStates) {
+            if (networkRegistrationState.getTransportType() == transportType) {
+                list.add(networkRegistrationState);
+            }
+        }
+        return list;
+    }
+
+    /**
+     * Get the network registration states with given transport type and domain.
+     *
+     * @param transportType The transport type. See {@link AccessNetworkConstants.TransportType}
+     * @param domain The network domain. Must be DOMAIN_CS or DOMAIN_PS.
+     * @return The matching NetworkRegistrationState.
+     * @hide
+     */
+    @SystemApi
+    public NetworkRegistrationState getNetworkRegistrationStates(int transportType, int domain) {
+        for (NetworkRegistrationState networkRegistrationState : mNetworkRegistrationStates) {
+            if (networkRegistrationState.getTransportType() == transportType
+                    && networkRegistrationState.getDomain() == domain) {
+                return networkRegistrationState;
+            }
+        }
+        return null;
+    }
 }
diff --git a/telephony/java/com/android/ims/ImsReasonInfo.java b/telephony/java/com/android/ims/ImsReasonInfo.java
index 4f6f68c..83d9bd9 100644
--- a/telephony/java/com/android/ims/ImsReasonInfo.java
+++ b/telephony/java/com/android/ims/ImsReasonInfo.java
@@ -384,6 +384,13 @@
     /** Call/IMS registration is failed/dropped because of a network detach */
     public static final int CODE_NETWORK_DETACH = 1513;
 
+    /**
+     * Call failed due to SIP code 380 (Alternative Service response) while dialing an "undetected
+     * emergency number".  This scenario is important in some regions where the carrier network will
+     * identify other non-emergency help numbers (e.g. mountain rescue) when attempting to dial.
+     */
+    public static final int CODE_SIP_ALTERNATE_EMERGENCY_CALL = 1514;
+
     /* OEM specific error codes. To be used by OEMs when they don't want to
    reveal error code which would be replaced by ERROR_UNSPECIFIED */
     public static final int CODE_OEM_CAUSE_1 = 0xf001;
diff --git a/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java b/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java
index 801a396..66e0955 100644
--- a/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java
+++ b/tests/net/java/com/android/server/IpSecServiceParameterizedTest.java
@@ -19,7 +19,6 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.fail;
 import static org.mockito.Matchers.anyInt;
-import static org.mockito.Matchers.anyLong;
 import static org.mockito.Matchers.anyString;
 import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.mock;
@@ -229,7 +228,7 @@
                         anyInt(),
                         anyString(),
                         anyString(),
-                        anyLong(),
+                        anyInt(),
                         eq(TEST_SPI),
                         anyInt(),
                         anyInt(),
@@ -264,7 +263,7 @@
                         anyInt(),
                         anyString(),
                         anyString(),
-                        anyLong(),
+                        anyInt(),
                         eq(TEST_SPI),
                         anyInt(),
                         anyInt(),